At long last, fast food chain McDonald’s has launched the line of cheese burger-emblazoned rain boots, thermal underwear, linens, hoodies and wall paper you’ve been waiting for. The strange product launch—all of the items are actually for sale—is part of the company’s “imlovinit” marketing campaign, in which marketing teams from 24 cities launch weird, McDonald’s initiatives to spread “24 hours of joy.” Because nothing spreads global joy like being able to buy bed sheets with pictures of Big Macs all over them …